All hail King Kong of Mars! Eagle-eyed experts spotted this gorilla in one of the pictures sent back by the Spirit Rover. Of course, NASA's trying to cover it up. But it's not the weirdest Martian we've found so far.

Also found in 2008, this block of timber is a major mystery. There are no forests on Mars — unless NASA was lying about those trees in the previous item. Things that make you go hmmm. Also, the wooden block looks like it was carried there by water, within the past few decades.

The Smiley Face On Mars:

As seen in the Watchmen graphic novel, this is a real geographical feature, the Galle crater. And it's also proof that Alan Moore's magic powers are nothing to fuck with, and all those Hollywood execs who've annoyed him should beware. Thanks to chernobog124 for reminding us of this one.